Goodwill and Intangible Assets - Summary of Changes in Carrying Amount of Goodwill (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($)
Goodwill [Line Items]
Balance at December 31,2019	$ 190,077
Impairments	(190,077)
Maritime [Member]
Goodwill [Line Items]
Balance at December 31,2019	174,150
Impairments	(174,150)
Destination Resorts [Member]
Goodwill [Line Items]
Balance at December 31,2019	15,927
Impairments	$ (15,927)

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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